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authorNick Lewycky <nicholas@mxc.ca>2009-07-11 17:04:01 +0000
committerNick Lewycky <nicholas@mxc.ca>2009-07-11 17:04:01 +0000
commitf067a233562d3cfeb29d0092d1069bb8d25cad31 (patch)
tree6928e294a6bc3d39512cb5a517c6cffad99225a1
parentc6f40b6ffb6ba9cd2a911d44f5f1d9417d80fe11 (diff)
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Clarify and simplify.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75366 91177308-0d34-0410-b5e6-96231b3b80d8
-rw-r--r--include/llvm/Support/ConstantRange.h6
-rw-r--r--lib/Support/ConstantRange.cpp2
2 files changed, 4 insertions, 4 deletions
diff --git a/include/llvm/Support/ConstantRange.h b/include/llvm/Support/ConstantRange.h
index 27585491b3..64019ca3a7 100644
--- a/include/llvm/Support/ConstantRange.h
+++ b/include/llvm/Support/ConstantRange.h
@@ -58,9 +58,9 @@ public:
/// assert out if the two APInt's are not the same bit width.
ConstantRange(const APInt& Lower, const APInt& Upper);
- /// makeICmpRegion - Return the range of values that a value must be within
- /// in order for the comparison specified by the predicate against range
- /// Other to be true.
+ /// makeICmpRegion - Produce the smallest range that contains all values that
+ /// might satisfy the comparison specified by Pred when compared to any value
+ /// contained within Other.
static ConstantRange makeICmpRegion(unsigned Pred,
const ConstantRange &Other);
diff --git a/lib/Support/ConstantRange.cpp b/lib/Support/ConstantRange.cpp
index e04272348d..f5b408f8a5 100644
--- a/lib/Support/ConstantRange.cpp
+++ b/lib/Support/ConstantRange.cpp
@@ -53,7 +53,7 @@ ConstantRange ConstantRange::makeICmpRegion(unsigned Pred,
switch (Pred) {
default: assert(!"Invalid ICmp predicate to makeICmpRegion()");
case ICmpInst::ICMP_EQ:
- return ConstantRange(CR.getLower(), CR.getUpper());
+ return CR;
case ICmpInst::ICMP_NE:
if (CR.isSingleElement())
return ConstantRange(CR.getUpper(), CR.getLower());